html *,
body * {
  padding: 0;
  margin: 0;
}
.player {
  width: 400px;
  height: 200px;
  position: relative;
  background-color: black;
}
.player video {
  width: 100%;
  height: 100%;
}
.player .btn {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  padding: 15px;
  background: rgba(143, 139, 139, 0.5);
  line-height: 40px;
  z-index: 99;
}
.player .btn:hover {
  background: rgba(209, 207, 207, 0.7);
}
.player .btn:before {
  border: 20px solid rgba(255, 255, 255, 0.7);
  border-top-color: transparent;
  border-bottom-color: transparent;
  border-right-color: transparent;
  content: ' ';
  display: block;
  width: 0;
  height: 0;
  margin-left: 50%;
  transform: translateX(-14%);
}
.player .btn:hover:before {
  border-left-color: rgba(143, 139, 139, 0.5);
}

.player.pause .btn {
  display: block;
}

.video-content {
  display: none;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  position: absolute;
  top: 0;
  left: 0;
  color: white;
}
.title {
  line-height: 20px;
  background-color: rgba(0, 0, 0, 0.2);
  padding-left: 20px;
  display: flex;
  justify-content: space-between;
  padding-right: 10px;
  cursor: default;
}
.state {
  display: flex;
  align-items: center;
}
.state::before {
  content: ' ';
  display: block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  margin-right: 5px;
  line-height: 20px;
  background-color: red;
}
